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Fix LMGR for MVCC.

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Get rid of Extend lock mode.
This commit is contained in:
Vadim B. Mikheev
1999-05-07 01:23:11 +00:00
parent 86bc1da262
commit 122abf3af3
7 changed files with 207 additions and 219 deletions
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4
src/include/storage/lmgr.h
View File

@ -6,7 +6,7 @@
*
* Copyright (c) 1994, Regents of the University of California
*
* $Id: lmgr.h,v 1.18 1999/02/19 06:06:34 tgl Exp $
* $Id: lmgr.h,v 1.19 1999/05/07 01:23:05 vadim Exp $
*
*-------------------------------------------------------------------------
*/
@ -25,8 +25,6 @@
#define ExclusiveLock 6
#define AccessExclusiveLock 7
#define ExtendLock 8
extern LOCKMETHOD LockTableId;

5
src/include/storage/lock.h
View File

@ -6,7 +6,7 @@
*
* Copyright (c) 1994, Regents of the University of California
*
* $Id: lock.h,v 1.24 1999/03/06 21:17:43 tgl Exp $
* $Id: lock.h,v 1.25 1999/05/07 01:23:07 vadim Exp $
*
*-------------------------------------------------------------------------
*/
@ -41,7 +41,7 @@ typedef int LOCKMODE;
typedef int LOCKMETHOD;
/* MAX_LOCKMODES cannot be larger than the bits in MASK */
#define MAX_LOCKMODES 9
#define MAX_LOCKMODES 8
/*
* MAX_LOCK_METHODS corresponds to the number of spin locks allocated in
@ -204,6 +204,7 @@ typedef struct LOCK
/* data */
int mask;
int waitMask;
PROC_QUEUE waitProcs;
int holders[MAX_LOCKMODES];
int nHolding;

11
src/include/storage/proc.h
View File

@ -6,7 +6,7 @@
*
* Copyright (c) 1994, Regents of the University of California
*
* $Id: proc.h,v 1.20 1999/02/19 07:10:47 tgl Exp $
* $Id: proc.h,v 1.21 1999/05/07 01:23:07 vadim Exp $
*
*-------------------------------------------------------------------------
*/
@ -48,8 +48,9 @@ typedef struct proc
* were starting our xact: vacuum must not
* remove tuples deleted by xid >= xmin ! */
LOCK *waitLock; /* Lock we're sleeping on */
int token; /* info for proc wakeup routines */
LOCK *waitLock; /* Lock we're sleeping on ... */
int token; /* type of lock we sleeping for */
int holdLock; /* while holding these locks */
int pid; /* This procs process id */
short sLocks[MAX_SPINS]; /* Spin lock stats */
SHM_QUEUE lockQueue; /* locks associated with current
@ -116,8 +117,8 @@ extern bool ProcRemove(int pid);
/* make static in storage/lmgr/proc.c -- jolly */
extern void ProcQueueInit(PROC_QUEUE *queue);
extern int ProcSleep(PROC_QUEUE *queue, SPINLOCK spinlock, int token,
int prio, LOCK *lock, TransactionId xid);
extern int ProcSleep(PROC_QUEUE *queue, LOCKMETHODCTL *lockctl, int token,
LOCK *lock);
extern int ProcLockWakeup(PROC_QUEUE *queue, LOCKMETHOD lockmethod,
LOCK *lock);
extern void ProcAddLock(SHM_QUEUE *elem);